ISP521-2BL

Transistor, Photovoltaic Output Optoisolators Overview

The ISP521-2BL is a dual-channel optocoupler manufactured by Isocom Components 2004 LTD. It features an infrared LED input paired with NPN silicon phototransistor outputs, housed in an 8-pin DIP package. Key electrical specifications include a maximum forward voltage of 1.3V, a typical rise time of 4μs, and a typical fall time of 3μs. The device supports a maximum input current of 50mA and provides an isolation voltage of 5300Vrms. Operating temperatures range from -30°C to 100°C, with a current transfer ratio between 0.5% and 6%.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Dual-channel configuration for simultaneous signal isolation.
• High isolation voltage rating for safety-critical applications.
• Standard NPN phototransistor output structure.
• Compatible with through-hole mounting techniques.

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial control systems
• Power supply protection circuits
• Smart metering devices

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'BL' against official datasheets to confirm packaging or variant details, as manufacturer documentation may not explicitly define this suffix's functional impact. Ensure the 8-pin DIP form factor matches the target PCB layout requirements. Cross-reference the 5300Vrms isolation rating with system safety standards before finalizing procurement decisions.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when dual-channel isolation is required within a standard DIP footprint. The 5300Vrms rating suits high-voltage separation needs. Verify that the 4μs switching speed meets the application's timing constraints. Confirm compatibility with the 50mA input drive capability and the resulting output current levels defined by the specified CTR range.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the ISP521 series, which serves as a replacement for legacy TLP521 family components. Isocom Components specializes in providing alternatives for discontinued or hard-to-find optocouplers. The series typically includes single, dual, and quad channel variants in various packages, maintaining industry-standard pinouts for easy retrofitting.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Officially documented substitutes include the TLP521 series. Verify pinout compatibility and electrical parameter equivalence before substitution. Ensure the replacement maintains the required isolation voltage and package dimensions for the existing design.

Transistor, Photovoltaic Output Optoisolators FAQ

What is the isolation voltage rating?

The ISP521-2BL has an isolation voltage of 5300Vrms.

How many channels does this optocoupler have?

It is a dual-channel device containing two independent isolation paths.